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Issue 2, 2017
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Deformable and wearable carbon nanotube microwire-based sensors for ultrasensitive monitoring of strain, pressure and torsion

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Abstract

Human joints have the ability to recover their mechanical functions after moderate dislocation. This remarkable capability inspired us to develop a “bone-skin-like” mechanosensor that can detect multiple mechanical deformations after recovery from electrical disconnection. To create this sensor, we embedded a low-strength, wet-spun single-walled carbon nanotube wire in polydimethylsiloxane. When various mechanical stimuli are applied, the wire gets fragmented and its resistance increases dramatically (from 360 Ω to practically infinity) in a reversible, recoverable manner even after the electrical failure/disconnection. The sensor is sensitive enough (a gauge factor of 105 at 15% uniaxial strain, a pressure sensitivity of 105 MPa−1 at 0.9 MPa pressure and a torsion sensitivity of 860 at a twisting angle of 60°) to be used for accurate sensing of a variety of deformation modes, suggesting a wide range of applications in wearable and deformable mechanical sensors.

Graphical abstract: Deformable and wearable carbon nanotube microwire-based sensors for ultrasensitive monitoring of strain, pressure and torsion

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Supplementary files

Article information


Submitted
15 Oct 2016
Accepted
30 Nov 2016
First published
02 Dec 2016

Nanoscale, 2017,9, 604-612
Article type
Paper

Deformable and wearable carbon nanotube microwire-based sensors for ultrasensitive monitoring of strain, pressure and torsion

J. Zhou, X. Xu, H. Yu and G. Lubineau, Nanoscale, 2017, 9, 604
DOI: 10.1039/C6NR08096K

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